Gin-saw-filing machine.



PATENTED SEPT. 18

A..A. WOOD. GIN SAW FILING MACHINE.

APPLICATION, FILED AUG. 29, 1904.

3 SHEETS-SHEET 1.

[N VEN T 01?.

WITNESSES.-

AL E W000 n12 "owns PETERS 00.. wnsnmorou, n. a.

PATENTED SEPT. 18', 1906.

' A. A. WOOD.

GIN SAW FILING MACHINE.

APPLIGATION FILED AUG.29, 1904.

s SHEETS-SHEET 2.

INVENTOR. ALB T/l. W00

WITNESSES.-

M E- 1 I H r! No. 831,203. PATENTED SEPT. 18, 1906.

A. A. WOOD. GIN SAW FILING MACHINE.

APPLIOATION FILED AUG. 29, 1904.

3 SHEETS-BIIEET 3.

WITNESSES.-

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oivrrnn STATES.

PATENT OFFICE.

r ALBERT A. WOOD. OF ATLANTA, GEORGIA, ASSIGNOR OF TWO-THIRDS TO EDWARD P. l/VOOD AND ALBERT P. WOOD, OF ATLANTA, GEORGIA.

GlN-SAW-FILING MACHINE.

T ctZZ whom it may concern.- Be it known that I, ALBERT A. W001), av

citizen of the United States of America, and a resident of Atlanta, in the county of Fulton and State of Georgia, have made certain new and useful Improvements in Gin-Saw-Filing f The invention is shown inthe accompany ing drawings, as follows: Figure 1 is a front view of the machine, and Fig. 2 is a side ele- .vation thereof from the right-hand side of vFig. 1. Fig. 3 shows fragments of the main frame and the shaft of the arms which carry. the reciprocating file-rods, illustrating the pe- 'culiar manner .of mounting'said file-rod arms. Fig. 4 is a detail from Fig. 3, showing one of the springs removed and without the frag-.

ments of themainframe and connecting elements.

the clamping-head thereon and a file in place,

and Fig. 10 .is an end view thereof. Figs. 11

and 12 are respectively plan and side elevations of the feed-pawl which, engages the teeth of the saw being filed and, vibrating, in-

'termittently rotates same. Figs. 13 and-14 are respectively side and sectional views of 'the connecting-rods.

a In the figures like reference characters are uniformly employed in the designation of corresponding elements of construction in all the views.

This invention consists in certain combinations of mechanism and constructions whereby the. machine. may rest upon the spaceblocks of a cylinder of assembled gin-saws, and be thereby located with proper respect to the periphery of the saws and by means of which the sharpening-files are so located as to operate in the interdental spaces and produce a sharp-pointed toothwhichis approximately Specification of Letters Patent.

v Application filed August 29. 1904. Serial No. 222.589.

u Figs. 5 and 6 are details also from; Fig.3, showing the eccentric bearing for said shaft.. Figs. 7 and 8 are respectively side Patented Sept. 18, 1906.

circular in cross-section and with the requisite depth of interdental space and of proper angle to the radius of the saw.

The invention further consists'of certain means whereby the sharpening-files are given a reciprocating motion, and, if the result to be obtained requires it, simultaneously a artially rotary or rolling motion, the files at the same time being given a yielding pressure upon the saw and being provided with means whereby a slight lateral movement of the files in the plane of the saw is produced to permit the settling of said files into the interdental spaces, and means for elastically controlling or permitting this slight adaptability, and, further, in producing a substantially positive intermittent motion of the cylinder of saws rotarily and for lifting the files out of the interdental spaces during such movement, and, further, in certain other devices whereby the files may be adjusted to suit the exact pitch distance of teeth, and other details which will be hereinafter explained.

A is the center leg of the machine, which is provided with oppositely-projecting bars or arms a, above which it is prolonged by a ver- I substantially centering upon said slots is formed a vertical guideway, and in this guideway is seated so as to be vertically adjustable an angle-plate B, which is provided with horizontal slots through which pass the screws 1), which secure the main frame 0 of the machine in position. By reason of the slots in the upwardly-projecting part a of the=leg A and the horizontal slots in the forwardly-projecting portion of the angle-block B adjustment of the head O and the operative parts carried thereby may obviously be had respectively to and from the periphery of the saw and relatively to its radius, wherebylthe machine may be adusted forlarge'r or'small er saws or-spaceblocks and to different angles of teeth relativelyto the radius.

The main frame 'of the machine, so called because it carries all of the operative elements, consists of a central web lying ver \tioally against the forwardly-projecting forming the vibratable' file rod arms.

flange of the angle-plate B and being provided near its bottom with a lug a, transversely perforated, and at it'stop by=a=housing 0 surmounted by a grip-handle About 'theniiddle at its tackare two 1 oppm with 1 the I lu'g's c and conjunctively therewith sup orting elemehtsfo'r the-shafts tit ties df the housing 0 are the shafts wet the 1 cranks D bea'ri'ng pinion's within'the hous-z ih g, the said cranks "D being mounted hp'en opposite ends of their res ective shafts; =d,

vvh'e'reb'y thecrank properof oneshaft is at the-front of the machine (left hand side, Fi'gJ '2) and the crank roper' of the other shtift-i'si at the baclrof t e machine. (Right-handi sidefFi .2.) I i is t einain-gear or s'piir wheel o'f' the 'mad chine" and is con'sta'ntly in mesh with the pinin suitable journahbearin gs in the main;

heme 0 and the'faee plat'e thereof an'd being r 'rdtat'able by a hand-crank or ulle attached outside of the face-plate. On'the back 's'idei ofthe spur wheel E isaeam e of'thetype; as orown 'cams and which-is the} feed cam andsheuldbe' duplicated in proper-i tieh to the desired ihterval of the-feed Tl'El-E front 'ofthe spu'r wheel E isadiskcam "83, which is provided with lugs-e Fig. 1, and

which is Called the lift-out L camf-in'a'smuch as it lifts the files from the interde'ntal spaces,f and should be so constructed and tim'e'd 'rel atively with thefee'd cam or cams 'e" as to'p'ro diice" the-required divergence of'the point's of the files very shortly "after the commence merit ef the forward partial rotation of the bylindl Of S HJWS H ndi-31" the "act/i611 Of the 1 feed mechanism and to allow thefiles to drop into the next successive interdental s'p'ac'e just be- :forethe cessation of such feeding movement.

:This lap of functions is for the purpose of keeping'the files, which are constantly recip r'oeat'ihgih-workmg contact with the saw as "long as'possible, the slight 'fore-and aft flex- 'u're of the file-carrying elements ermitting the files to followthesaw-slightly in its forward movement and" to adapt themselves when returning 'to the interdental space to the immaturely fe'd"position of thelatte'r, as will be hereinafter specified.

T0 ,providefor the intermittent partial rotation of the saws, I have provided a lever F, spring-pressed to retraction by a coil-springf and oscillatably mounted upon the frame C by a shoulder-screwy, which acts as a fulcrum, and through a series of holes therefor in the lever F, I prov-ide'f'o'ra variation (if the relative lengths of the lever members "and hen'ee a varying stroke t't the pawlf whidhis leeseiy secured to the lower end of the snide-ever F and carries "a knife ft-upon "its up er side, -grouhd'upehits forward edge te fit -the tee'throds. i-hese flle-rodiarms earv wn nd journal-boxes? dmwhieh are set re' ovabl'e -whieh wii1 be hereinaftei de's tibed. 'ehe ef 'i'onsonthe'shafts d, its'sh'aft e'bein' 'g m unted: 1

1e file-rod -G the orie hown at the riught-hand:iirl i g. '1- -'i's'-=situatedeh the freut *efthemaehine, while the other is situated near the backdf themaehihe ih sueh positieh that th'e' -aXes 'of the said tidal-Bea rig the'reo'n will converge do Wardly, so hat bo'th filesfwill work at preip'er angle to Ithe teeth of the saw :ahd at a istarree or from two to seven teeth, --sa ehithe periphery of thesawapart. These file red arms are pair- "tially etatahly mount-ed hy i seciirin' them u on shafts o pin ties gflwhieh are ih'directl-y mounted by" their ends en the lugs 12* and-c aforesaid. Upon reference to "Figs. -to-'6, inclusive, especially the two firstnanred, f the eonstrueti'onwi-ll 'be'b-etter understood. "Set in the lu' e is a stud y gheld in plae'etherein b'y-a ser'ew gi passin gthrough the dug 0 and into the said stud. Upon the 'shaft'if is" a cellar *g ,:ahd the' ferward ehdof thesaid shaft is:providedwith :a1pivotm g being an eccentric -rot-ari1-ynrount'ed in-the 'lug '0 and having "an :eecentric seat therein for 1 the pivot-1g? (il-o's'elyeh'eirelihg the-S1711 and the end of the shaft 9 is a coil-spring 9 1 whi'ehshould be a drivin fit-on -each. Surroundih a'nd inclosing said sprin tg is an'- other 'eoiled 'sprin' ":y ,'-eoiied ih the epposite direction and acting between abutments conthe shaft g forwardly, so as to hold its pivot g in the seat in the eccentric g. The springs at the back end of the shafts 9 act to permit a motion of the file-rod arms in the plane of the saw, same being practically fulcrumed upon the pivot-bearing in the eccentrics g, thereby permitting the lap of function hereinbefore mentioned of the feeding mechanism and the files and also removing such rigidity of the files as would prevent their accommodating themselves to variation of in -terdental distances which might be produced and do exist in saws previously filed by hand or machines having unreliable feed lifting of the files.

mechanisms. The relative distance between .the files, which may be changed so as to adapt them to varying pitch distances of the mounting of the forward ends of the shafts A partial rotation of one of eccentrics g obviously swings the shaft g upon a fulcrum consisting of the springs g and g, causing a correlative movement of the axis of the filer ods g and causing the files when this adjustment has been made to drop with certainty into the proper interdental space when the feeding of the saw has been accomplished,

with the files lifted from contact therewith.

Screws 9 serve to secure the eccentrics g as set. Upon the upper ends of'the file-rod arms are adjustably secured roller-arms g, the rollers g of which contact with the edge of the disk-cam e and are caused to diverge by the projections 6 thereof at a time, as aforesaid, just subsequent to the starting forward of the saw, due to the action of the feed mechanism. In the case of the front file-rod arm G this arm 9 is secured to an integral upward projection 9 of said arm; but in the case of the back file-rod arm G a supplementary arm 9 is secured upon the correlative shaft g for this purpose. As shown in Fig. 1, these roller-arms g are so adjustable as to provide for a greater or lesser The file-rod arms are spring-pressed divergently at their lower ends in order to press the crossed files upon the saw by means of springs g", secured at one end to said file-rod arms and at the other end to a hook-block 9 adjustaby mounted upon a rod 9 passing through the transversely-perforated lug c of the frame 0 and being secured therein. 9 represents wrists on the file-rods 9 by which connection is made'for their reciprocation and partial rotation durlng same.

groove, but without its sides touching the sides of said groove, the angle of the groove being ninety degrees and the angle of the file being sixty degrees. In like manner a file with any degree of angle on its working edge may be supported in proper position to work in the interdental spaces.

It is found by experience that a square file run without axial rotation between the teeth of a gin-saw will make the proper-shaped tooth, although not the ideal tooth for ginning cotton, which is a cone circular in crosssection. A square file will not, however, enter the interdental space as rapidly in action as will a three-cornered file, nor can it be partially rotated upon its own axis during action said. The rapid deepening of the teeth by running a three-cornered file thereon without axial partial rotation is very advantageous in the preliminary cutting down of teeth worn very short or broken off by use, which is the normal dull condition of gin-saws. Now in order to accommodate the machine which I have shown is capable of carrying either sort of file to the varying requirements of the premises I have provided cranks D, the wrist of which is adjustable to vary its obliquity and which I will now proceed to describe. As aforesaid, the shafts d are mounted at the ends of the housing 0 bearing pinions cl and having, as best shown in Figs. 7 and 8, cross-heads (1 This crosshead is perforated longitudinally and proj ects one end farther from the center of the shaft d than the other end, whereby the stroke may be made longer or shorter, as'desired, each of said ends being conical on cross-head d with a screw d the function of which is plain. The wrist d is substantially at a right angle to the pin d". It is plain that by loosening the screw (i the wrist (1 may be partially revolved upon its pivot, the pin d thus producing the desired degree or obliquity of the axis of the wrist d to the axis of the wrist d. Thus, obviously, the revolution of-the wrist 01 around the axis of the shaft d will produce a reciprocating motion of the file-rods g accompanied by agreater or less degree of partially-rotary movement and provide the peculiar movement of the file, which causes it to roll upon the back and front of adjacent teeth of the saw,'with the result aforesaid. By the use of a square file without this partially-rotary motion thereof a toothwill be produced which is conical, but rectangular in cross-section, while by using a three-cornered file under the same conditions the interdental space will be deepened without a correlative reduction of the thickness of the tooth.

H is the pitman, which connects the'wrists d and g and transmits motion from the cranks to the file rods, consisting, as shown in Figs. 13 and 14, of the connecting-rod proper, h, and bearing-boxes h on either'end thereof, all alike in construction. These bearing-boxes are-cast solid and drilled to receive the wrists,'a saw-cut being made in the lug thereof to'fitthe'end' ofthe connecting-rod h and-said rodbeingperfor'ated'at its ends. The two lu s so formedare perforated -with a larger hole,'ashouldered pin h being passed through the perforation in the 'saidrod'h, with its larger'portion fitting and lying within the-"perforation of one of the lugs'h ofthe bearing-box. The reduced portion of the saidpin'h is then firmly fastened and secured to the'rod-h, preferably by being staked therein, and'acollar k is placed around said reducedportion within the unoccupied opening intheother lugyand the'end 'of the reduced'portion of-thepinh is'riveted to hold same in place. This novelconstr'uc- 'tion is necessary at thispoint by'reason of the double stress placed upon this joint bythe reciprocating and partially-rotary motion transmitted thereby. It will be seen .by this construction a relatively larger pin is provided than could be otherwise obtained, and its becoming loose, and consequent reduced efficiency and working out,"i's obviated by its close connection with the connecting-j rod. Thedouble bearing of the end of the. rod itself between the dugs and on thepin provides a bearing which is'more lasting than any other practicable form.

By loosening the screw 9, Fig. 1, the rod 'g will shift endwise and exactly equalize; the pressure on'both files, producing, with files in their usual equal condition of sharp ness, uniform work on both sides of the saw.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent of the United States, isp 1. In a ginsaw-filing machine, a frame and means for supporting same in operative relation to the ginsaw, a shaft mounted on said frame by its ends, an eccentric bushing forming the means for mounting one end thereof, a file-rod arm carried by said shaft, a file-rod adapted to carry a file on its -extremity and mounted slidably saidfile-rod arm, and means forcausing said file-rod to reciprocate therein and for ressing same into operative position elastically.

2. In a gin-saw-filing machine, -a frame and means for supporting same in operative relation to the gin-saw, a stud set in said frame, a file-rod arm comprising the arm proper with file-rod bearings thereon and "a shaft, the oneendof sa-id-shaft-beingloosely mounted with its otherendinjuxta ositien to said stud anda coil spring=coiled closely upon said stud andshaft end, a file rod slidably'mounted in" the hearings on saidfile-rod arm and means for producing a reciprocatory'movement of saidfilerod andforsecuring a file-to the extremity of-sai'd rod.

3. In a "gin sa'w-filing machine, 'a frame and means forsupporting same in'operative relation to the gin-saw; an eccentric bushing set in said frame,-a-stud setin saidframe in opposition to said eccentric bushings, a file- 'rod arm comprising'the-arm propenwith'filerod'bearings thereon and a shaft therein, 'one end of "said shaft being loosely mounted in said 1 eccentric bushing -with its other end in juxtaposition to said stud and -'a"coil-'spring coiled closely upon said stud andshaft end, an abutment onsaid shaft'anda larger'coilspring surrounding said first-named spring with its ends in contact with said abutment and the frame, a file-rod slidably -mounted in the hearings on said fil'e rod arm and means for producing a reciprocatory movement of said file-rod and for securing a file to the extremity of said rod.

4. Ina gin-saw filing machine, a'frame and meansfor supportingsamein operative relation to the gm s'aw, a rod mounted in suitable bearings and adapted to have a spiral motion therein, and a crankcomp'rising a shaft withacross-head thereon, longitudinally perforated, and a wristpin, the laterally-projecting arm of which is inserted in said longitudinal perforation -soas to be axially rotatable therein to adjustthamis'tpin to and from parallelism to the axis of said shaft and means for locking-it insuch adjustment and a pitman-conne'cting said 'wrist pi'n and said rod.

5. In a gin saw-filing machine, a frame and means forsupportingsame in operative relation to the gin-saw, a rod mounted in suitable bearings and adapted to have a spiral motion therein, and a crank-comprising a shaft with a cross h'ead longitudinally perforated thereon, split and cone-shaped at its ends, an L-shaped wrist-pin the laterallyprojecting arm of which is inserted insaid longitudinal perforation, means for looking it therein consistingof conically-bored collars fitting said laterally-projecting arm and IIO placed thereon so as to embrace the coneshaped ends of said cross-head and a screw set substantially axially in said laterallyprojected arm and adapted to converge said collars upon said cone-shaped ends, and a piiaman connecting said Wrist-pin and said r0 ALBERT A. WOOD.

Witnesses:

EDWD. P. W001), ANDREW M. BECK. 

